EP 4034052 A1 20220803 - BIOMEDICAL FINGER ASSEMBLY WITH RATCHETING LOCK
Title (en)
BIOMEDICAL FINGER ASSEMBLY WITH RATCHETING LOCK
Title (de)
BIOMEDIZINISCHE FINGERANORDNUNG MIT RATSCHENVERSCHLUSS
Title (fr)
ENSEMBLE DOIGT BIOMÉDICAL AVEC VERROU À CLIQUET
Publication
Application
Priority
- US 201962904506 P 20190923
- US 2020052066 W 20200922
Abstract (en)
[origin: US2021085490A1] This disclosure provides systems, apparatuses, and devices for a prosthetic digit usable with persons with amputations at or proximal to the metacarpophalangeal joint. The device restores prehension in a person with missing fingers or thumb by providing opposition to forces in the extension direction via a spring-loaded pawl and locking rack ratchet mechanism, thereby allowing an individual to manipulate or stabilize objects. The digit may be spring-loaded in the extension direction by a torsion spring or other biasing member. The pawl may be automatically disengaged from the rack when the digit reaches full flexion, and the full flexion disengage stop may be adjustable. The pawl may be automatically engaged with the rack when the digit reaches full extension, and the extension stop may be adjustable. The pawl may contain a lateral feature that creates interference with the anchoring linkage under load and limits deflection of the structure.
IPC 8 full level
A61F 2/58 (2006.01)
CPC (source: CN EP KR US)
A61F 2/586 (2013.01 - CN EP KR US); A61F 2/68 (2013.01 - CN); A61F 2002/5001 (2013.01 - US); A61F 2002/5043 (2013.01 - US); A61F 2002/5073 (2013.01 - US); A61F 2002/587 (2013.01 - CN); A61F 2002/6854 (2013.01 - CN EP KR US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 11554029 B2 20230117; US 2021085490 A1 20210325; AU 2020354470 A1 20220414; CA 3153481 A1 20210401; CN 114650794 A 20220621; CN 115227467 A 20221025; EP 4034052 A1 20220803; EP 4034052 A4 20231011; JP 2022548378 A 20221118; KR 20220113924 A 20220817; US 2023320873 A1 20231012; WO 2021061681 A1 20210401
DOCDB simple family (application)
US 202017028792 A 20200922; AU 2020354470 A 20200922; CA 3153481 A 20200922; CN 202080066884 A 20200922; CN 202210622641 A 20200922; EP 20869041 A 20200922; JP 2022517781 A 20200922; KR 20227013194 A 20200922; US 2020052066 W 20200922; US 202218078693 A 20221209